1001203 has 8 divisors (see below), whose sum is σ = 1150560. Its totient is φ = 853440.

The previous prime is 1001197. The next prime is 1001219. The reversal of 1001203 is 3021001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001203 - 2⁹ = 1000691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

1001203 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1001003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1713 + ... + 2221.

It is an arithmetic number, because the mean of its divisors is an integer number (143820).

2^1001203 is an apocalyptic number.

1001203 is a deficient number, since it is larger than the sum of its proper divisors (149357).

1001203 is an equidigital number, since it uses as much as digits as its factorization.

1001203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 1001203 is about 1000.6013192076. The cubic root of 1001203 is about 100.0400839306.

Adding to 1001203 its reverse (3021001), we get a palindrome (4022204).

It can be divided in two parts, 1001 and 203, that multiplied together give a triangular number (203203 = T₆₃₇).

The spelling of 1001203 in words is "one million, one thousand, two hundred three".